[Question] oc start-build on a KafkaConnect pod can't seem to find my IBM COS Sink Connector

Hey so this might be a really silly question but on an OpenShift cluster with the Strimzi Operator installed I have a KafkaConnect S2I pod up.

I might be going about this the wrong way but I built the JAR from this repo https://github.com/ibm-messaging/kafka-connect-ibmcos-sink

Anyways I used an oc start-build connect-cluster-pod --from-dir ./connectors/ where the connectors folder has the built connector binary/JAR. Next I’m trying to create a CRD for a KafkaConnector by applying the below yaml

apiVersion: kafka.strimzi.io/v1alpha1
kind: KafkaConnector
metadata:
  name: cos-sink-connector
  labels:
    strimzi.io/cluster: connect-cluster
spec:
  class: com.ibm.eventstreams.connect.cossink.COSSinkConnector
  tasksMax: 1
  config:
    key.converter: org.apache.kafka.connect.storage.StringConverter
    value.converter: org.apache.kafka.connect.storage.StringConverter
    topics: <topic-name>
    cos.api.key: <api-key>
    cos.bucket.location: <region>
    cos.bucket.name: <bucket-name>
    cos.bucket.resiliency: regional

Next when I run oc get kafkaconnector cos-sink-connector -o yaml I receive this following error

message: 'PUT /connectors/cos-sink-connector/config returned 500 (Internal Server
        Error): Failed to find any class that implements Connector and which name
        matches com.ibm.eventstreams.connect.cossink.COSSinkConnector

Apologies if I’m going about this in completely the wrong way.

[scholzj]

Actually, I think I found it at least locally for my self. I build the JAR with Java 11 while Strimzi 0.18 is still using Java 8. When I rebuild it with Java 8, it seels to show up in the list (I have no idea what the plugin is for, so I haven’t tried it really - just checked the list). Could that be your issue as well?

[jackyng88]

So, I guess we can close this issue now?

(PS: From next release we will use Java 11 as runtime)

Yes, we can! Also thanks for the PS as well!